Aoc 712sa+Service+Manual

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17 LCD Color Monitor

AOC 712Sa

HZ Service Service Service

Horizontal Frequency 30kHz 80kHz

TABLE OF CONTENTSDescription Page Description Page

Table Of Contents...........................................1 6.Schematic....................................17 Revision List..............................................2 6.1 Main Board..............................................17 Important Safety Notice...........................3 6.2 Power Board......................................21 1. Monitor Specification......................................4 6.3 Audio Board.....................................23 2. LCD Monitor Description.......5 7.PCB Layout.........................................24 3. Operation Instruction..........................6 7.1 Main Board.........................................24 3.1 General Instructions......................................6 7.2 Power Board.....................................26 3.2 Control Button..............................6 7.3 Audio Board.....................................28 3.3 Adjusting the Picture.......................................8 7.4 Key Board.......................................28 4. Input/Output Specification........................10 8. Maintainability.......................................29 4.1 Input Signal Connector.............................10 8.1 Equipments and Tools Requirement..............29 4.2 Factory Preset Display Modes.........................10 8.2 Trouble Shooting.................................30 4.3 Panel Specification.......................11 9. White-Balance, Luminance adjustment.............36 5. Block Diagram...................................13 10. Monitor Exploded View.............37 5.1 Soft Flow Chart..............13 11. BOM List.....................................................39 5.2 Electrical Block Diagram..............15 SAFETY NOTICE ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

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17 LCD Color Monitor Revision ListRevision A00 Date Feb.-07-07 Revision History Initial Release TPV Model

AOC 712Sa

T76CNMNQF6AO8P

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17 LCD Color Monitor Important Safety Notice

AOC 712Sa

Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended. It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected. Hereafter throughout this manual, AOC Company will be referred to as AOC. WARNING Use of substitute replacement parts, which do not have the same, specified safety characteristics may create shock, fire, or other hazards. Under no circumstances should the original design be modified or altered without written permission from AOC. AOC assumes no liability, express or implied, arising out of any unauthorized modification of design. Servicer assumes all liability. FOR PRODUCTS CONTAINING LASER: DANGER-Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM. CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. CAUTION -The use of optical instruments with this product will increase eye hazard. TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE MANUAL. Take care during handling the LCD module with backlight unit -Must mount the module using mounting holes arranged in four corners. -Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen. -Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel. -Protect the module from the ESD as it may damage the electronic circuit (C-MOS). -Make certain that treatment persons body is grounded through wristband. -Do not leave the module in high temperature and in areas of high humidity for a long time. -Avoid contact with water as it may a short circuit within the module. -If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may damage the panel.)

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17 LCD Color Monitor 1. Monitor SpecificationsDriving system LCD Panel Size Pixel pitch Video Separate Sync. Input H-Frequency V-Frequency Display Colors Dot Clock Max. Resolution Plug & Play EPA ENERGY STAR ON Mode OFF Mode Input Connector Input Video Signal Maximum Screen Size Power Source Environmental Considerations Dimension Weight (N. W.)Audio Output Power Consumption( Maximum ) Regulatory Compliance

AOC 712Sa

TFT Color LCD 43.2cm(17.0") 0.264mm( H ) 0.264mm( V ) R,G,B Analog Interface H/V TTL 30kHz 80kHz 55-75Hz 16.2M Colors 135MHz 1280 1024 VESA DDC2BTM 37W 1W 15-pin D-Sub Analog:0.7Vp-p(standard), 75 OHM, Positive Horizontal : 337.92mm Vertical : 270.34mm 100~240VAC,50~60Hz Operating Temp: 5 to 35C Storage Temp.: -20 to 60C Operating Humidity: 10% to 85% 371(W)380(H)106.4(D)mm 4.5kg Unit (net)Rated Power 1.5 W rms (Per channel) 37 Watts cULus, TUV-S

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17 LCD Color Monitor 2. LCD Monitor Descriptionpanel control logic, brightness control logic and DDC.

AOC 712Sa

The LCD monitor will contain a main board, a power board, a key board and an audio board which house the flat The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

Monitor Block Diagram

CCFL Drive.

Flat Panel and CCFL backlight

Power board (Include: adapter, inverter)

RS232 Connector Main Board For white balance adjustment in factory mode Key board Audio board

AC-IN 100V-240V

Video signal, DDC HOST Computer

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17 LCD Color Monitor 3. Operating Instructions3.1 General Instructionsmonitor. By changing these settings, the picture can be adjusted to your personal preferences. The power cord should be connected. Connect the video cable from the monitor to the video card. Press the power button to turn on the monitor position. The power indicator will light up.

AOC 712Sa

Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the

3.2 Control Buttons

EXTERNAL CONTROLS 1. 2. 3. Auto Adjust Key/Exit < / Volume Power Key/ LED 4. 5. > / Volume MENU/ENTER

1. 2. 3.

AC Power Cord D-Sub Cable Audio Cable

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17 LCD Color MonitorFRONT PANEL CONTROL Power Button / Power Indicator: Press this button to turn the monitor ON or OFF. Blue Power On mode. Off mode. Orange

AOC 712Sa

MENU / ENTER : Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status. > /Volume: Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust a function when function is activated. < /Volume: Activates the volume control when the OSD is OFF or navigate through adjustment icons when OSD is ON or adjust a function when function is activated. Auto Adjust button / Exit: 1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu). 2. When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function. The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus.

OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then press power button to turn the monitor on. NOTES Do not install the monitor in a location near heat sources such as radiators or air ducts, or in a place subject to direct sunlight, or excessive dust or mechanical vibration or shock. Save the original shipping carton and packing materials, as they will come in handy if you ever have to ship your monitor. For maximum protection, repackage your monitor as it was originally packed at the factory. To maintain the cleanness of your LCD display, wipe it periodically with clean and soft cloth. The screen may be damaged by any liquid splash. To keep the monitor looking new, periodically clean it with a soft cloth. Stubborn stains may be removed with a cloth lightly dampened with a mild detergent solution. Never use strong solvents such as thinner, benzene, or abrasive cleaners, since these will damage the cabinet. As a safety precaution, always unplug the monitor before cleaning it.